The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2002
Filed:
Jan. 17, 2001
Frank Hannemann, Spardorf, DE;
Ulrich Schiffers, Eckental, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A gas and steam-turbine plant includes a heat-recovery steam generator which is connected downstream of a gas turbine on the flue-gas side and has heating surfaces connected in a water/steam circuit of a steam turbine. A gasifier is connected upstream of a combustion chamber of the gas turbine for integrated gasification of a fossil fuel. Oxygen can be fed to the gasifier from an air-separation unit, to which in turn a partial flow of air compressed in an air compressor associated with the gas turbine can be admitted on the inlet side. In such a gas and steam-turbine plant, reliable cooling of the bleed air, in an especially simple type of construction, is to be ensured in all operating states, irrespective of the integration concept which is taken as a basis. Therefore, a heat exchanger for cooling the partial flow of compressed air is connected on the primary side in a bleed-air line connecting the air compressor to the air-separation unit. The heat exchanger is constructed on the secondary side as an evaporator for a flow medium.